"Debug Error! abort() has been called" EASendEmail - c++

I am using EASendEmail with Visual C++. After I compile the code and run it, I get an error which reads: "Debug Error! /Program:[file path] /abort() has been called/ (press retry to debug the application)"
The code is from this website:https://www.emailarchitect.net/easendmail/kb/vc.aspx?cat=0
The error is occurring in the lins:
oSmtp->LicenseCode = _T("TryIt");
'
_tprintf(_T("Start to send email ...\r\n"));
I have tried debugging mode in visual studio and it lead me to an unhandled expression in an attached library and an error at a specific memory location.
c++
#include "pch.h"
#include "easendmailobj.tlh"
#include <tchar.h>
#include <iostream>
using namespace std;
using namespace EASendMailObjLib;
int _tmain(int argc, _TCHAR* argv[])
{
::CoInitialize(NULL);
IMailPtr oSmtp = NULL;
oSmtp.CreateInstance("EASendMailObj.Mail");//<- one cause of the error
oSmtp->LicenseCode = _T("TryIt");
//...
_tprintf(_T("Start to send email ...\r\n"));//<- one cause of the error
the error:https://imgur.com/a/M3C72Kc

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You can use the code below:
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But after running this program, I always get segment fault. XCode shows EXEC_BAD_ACCESS(code=1, address....) error.
I also tryied running it from sudo, but the same result. What is the problem?
The code:
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#include <objc/objc.h>
#include <objc/objc-runtime.h>
#include <CoreFoundation/CoreFoundation.h>
#include <CoreServices/CoreServices.h>
using namespace std;
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cout << ret << endl;
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Try creating your CFURLRef using one of the proper CFURLCreate* methods. See "Creating a CFURL" here.
For example:
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You need to Release the "Created" variables to clean up memory.

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I am trying to grab the names of webcams plugged into my computer and shove them into a combobox, then access the name later. Here is my code:
#include <QApplication>
#include <QComboBox>
#include <QCameraInfo>
#include <iostream>
int main(int argc, char *argv[])
{
QApplication app{ argc, argv };
QComboBox combo;
QList<QCameraInfo> info = QCameraInfo::availableCameras();
foreach(QCameraInfo i, info)
combo.addItem(i.description());
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std::cout << combo.currentText().toStdString() << std::endl;
return app.exec();
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The code creates and shows a combo box that has the name of a webcam that I have plugged in to the computer. It will then toss me an access violation exception in trying to print the combo box string to the console.
If I comment the cout line out, all is well, but on exit I get a Debug Assertion Failed! message:
Expression: _BLOCK_TYPE_IS_VALID(pHead->nBlockUse)
which I take to mean I am deleting an object that has been deleted (the QString in the combobox???).
If I change the code to fill the combo box with dummies:
#include <QApplication>
#include <QComboBox>
#include <QCameraInfo>
#include <iostream>
int main(int argc, char *argv[])
{
QApplication app{ argc, argv };
for(int i=0; i<2; i++)
combo.addItem(QString("la la la");
combo.show();
std::cout << combo.currentText().toStdString() << std::endl;
return app.exec();
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I get the same error on the cout, but if I comment that line out, the application exits correctly. I am using Visual Studio 2013, Windows 7, and Qt5.
Now it works. I kept the same source code, but completely scrapped the existing project and started a new one from scratch.
I've discovered that if I set the Runtime Library flag to Multi-Threaded DLL Debug, I will get access violation errors. If I set it to Multi-Threaded DLL, it is fine.
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VS2013 c++ connect mysql --- error in Libmysql.dll

main.cpp
#include "sqlConnection.h"
#include <iostream>
int main() {
sqlConnection *sqlC = new sqlConnection();
sqlC->ifSucceed();
}
sqlConnection.h
#include <Windows.h>
#include <stdio.h>
#include <winsock.h>
#include "mysql.h"
#include <iostream>
#pragma once
using namespace std;
class sqlConnection
{
public:
sqlConnection();
~sqlConnection();
void ifSucceed();
MYSQL mysql;
MYSQL_RES *result;
MYSQL_ROW row;
};
sqlConnection.cpp
#include "sqlConnection.h"
sqlConnection::sqlConnection()
{
mysql_init(&mysql);
mysql_real_connect(&mysql, "xxxxx", "xxxx", "xxxx", "librarySys", 7726, NULL, 0);
}
void sqlConnection::ifSucceed() {
char *sql = "select * from tb_bookcase";
mysql_query(&mysql, sql);
result = mysql_store_result(&mysql);
if ((row = mysql_fetch_row(result)) != NULL) {
cout << "succeed!" << endl;
} else {
cout << "faiiiiiiiiled" << endl;
}
}
sqlConnection::~sqlConnection() {
}
IF there is a libmysql.dll in source file error the message : There
are untreated exception:0x00007FFED00441E6 (libmysql.dll) (in the
librarySys.exe ) 0xC0000005: Access conflict happened when reading
0x0000000000000010.
And then I have to stop. VS give me choice, to change PDB, the binary file path and retry. But I do not know how to do it.
If I delete the libmysql.dll , the error message is:
The program can not be started for losing libmysql.dll in the
computer.Try to reinstall this program to solve this problem.
It's so confusing! I have tried many ways to connect. There are always error messages.
All mysql_* functions return a value that indicates success or failure. Your code disregards them. You ought to confirm whether calls were successful before proceeding to the next call. I surmise you actually failed to connect to the DB and your MYSQL is remains invalid.
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Another thing:
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Many thanks,
Marek
#include "stdafx.h"
#include <windows.h>
#include <atlstr.h>
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StringListPtr installedProducts = pInstaller->GetRelatedProducts(upgradeCode);
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int _tmain(int argc, _TCHAR* argv[])
{
::CoInitialize(NULL);
InstallerPtr pInstaller("WindowsInstaller.Installer");
_bstr_t upgradeCode("4C34BD16-CAD4-4059-B074-777793406C5F");
_bstr_t installedProduct = GetInstalledProduct(pInstaller, upgradeCode);
StringListPtr features = pInstaller->GetFeatures(installedProduct);
::CoUninitialize();
return 0;
}
I finally found the solution. The correct way is include msi.lib in linker includes and use Msi.h from windows sdk.
#include "stdafx.h"
#include <windows.h>
#include <Msi.h>
int _tmain(int argc, _TCHAR* argv[])
{
wchar_t productCode[255];
int result = MsiEnumRelatedProducts(L"{4C34BD16-CAD4-4059-A074-777493406C5F}", 0, 0, productCode);
wchar_t featureName[255];
wchar_t featureParent[255];
MsiEnumFeatures(productCode, 0, featureName, featureParent);
INSTALLSTATE featureState = MsiQueryFeatureState(productCode, L"FeatureName");
return 0;
}